#include <stdio.h>
int func(int n)
{
	int sum = 0;
	int i;
	for(i = 1; i <= n; i++)
	{
		sum += i;
	}
	return sum;
}
int main()
{
	int i;
	long result = 0;
	for(i = 1; i <= 100; i++)
	{
		result += i;
	}
	printf("result(1~100) = %ld\n", result);
	printf("result(1~250) = %d\n", func(250));
	return 0;
}
